Stefano Lissa

<p>WordPress themes need thumbnails in different sizes and they even let the user to change those dimensions.<br />
But WordPress has a problem: it does not regenerates the thumbnails when new sizes are registered.</p>
<p>Thumbnails intercepts the request by themes or plugins to WordPress to get a specific thumbnail, generates it and caches it on disk.<br />
Efficiently, it produces a perfectly cropped image, with the right dimension avoiding unpleasant stretching.</p>
<p>Thumbnails does not modify your blog or your media library. When deactivated the blog returns to its old behavior.</p>
<p>The second important feature is the autoselection of featured image for post which are missing it.<br />
You can choose between the on the fly selection without persist it or, for better performances, to persist it once selected.</p>
<p>Read the <a href="https://www.satollo.net/plugins/thumbnails" rel="nofollow ugc">Thumbnails</a> official page for detailed information.</p>
<p>Theme developers can find instructions to use it (no code tied to Thumbnails needs to be written!).</p>
<p>Other plugins by Stefano Lissa:</p>
<ul>
<li><a href="https://www.satollo.net/plugins/hyper-cache" rel="nofollow ugc">Hyper Cache</a></li>
<li><a href="https://www.thenewsletterplugin.com" rel="nofollow ugc">Newsletter</a></li>
<li><a href="https://www.satollo.net/plugins/header-footer" rel="nofollow ugc">Header and Footer</a></li>
<li><a href="https://www.satollo.net/plugins/include-me" rel="nofollow ugc">Include Me</a></li>
<li><a href="https://www.satollo.net/plugins/ads-bbpress" rel="nofollow ugc">Ads for bbPress</a></li>
</ul>
<h3>Screen shots</h3>
<p>No screenshots are available at this time.</p>


Thumbnails

This plugin solves my problems with the WP thumbnails, thanks Stefano!

The one that solves my problem

I re-use my post thumbnail images in various ways, so I like to upload them full size, and I need the software to resize them as needed. This plugin does exactly that for me.

It performs its magic transparently and makes my pages a lot lighter. Highly recommended.


Amazing

Autoselect the featured image and creates pixel perfect resizes on the fly without regenerate all the thumbnails.

Adi Glibanović

<p>The Selective Thumbnail Regenerator plugin provides a convenient way to regenerate image thumbnails for WordPress media libraries. Unlike other thumbnail regeneration plugins that process the entire library, this plugin allows you to selectively regenerate thumbnails for images uploaded during a specific year and month.</p>
<h4>Key Features</h4>
<ul>
<li><strong>Date-based Selection</strong>: Choose a specific year and month to limit which thumbnails are regenerated</li>
<li><strong>Progress Tracking</strong>: Visual progress bar shows the status of the regeneration process</li>
<li><strong>User-friendly Interface</strong>: Simple dropdown menu interface for date selection</li>
<li><strong>Resource-friendly</strong>: Built-in delay between each regeneration to prevent server overload</li>
<li><strong>Real-time Updates</strong>: Status messages show the current progress and any errors</li>
</ul>
<h3>Usage</h3>
<ol>
<li>In your WordPress admin panel, navigate to Tools > Selective Thumbnail Regenerator.</li>
<li>Select the year and optionally the month for which you want to regenerate thumbnails.</li>
<li>Click “Check Number of Images” to see how many images will be processed.</li>
<li>Click “Regenerate Thumbnails” to start the regeneration process.</li>
<li>Wait for the process to complete – you’ll see a progress bar and status updates.</li>
</ol>
<h3>Troubleshooting</h3>
<h4>Error: “No images found for the selected period”</h4>
<p>This means there are no images in your media library that were uploaded during the selected year and month. Try selecting a different time period.</p>
<h4>The regeneration process is slow</h4>
<p>This is normal behavior. The plugin deliberately adds a 1-second delay between processing each image to prevent server overload. This might make the process seem slow, but it ensures stability.</p>
<h4>The process stops with an error message</h4>
<p>If you encounter an error during regeneration, check your server’s PHP error logs for more details. Common issues include memory limits, timeout settings, or file permission problems.</p>


Selective Thumbnail Regenerator

A WordPress plugin that allows users to regenerate thumbnails for media files uploaded in specific months and years.

Thumbnails vs Selective Thumbnail Regenerator